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Old 07-03-2004, 09:04 PM   #1
Jeremy
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Default The JVC KT-SR1000 Radio from the inside out

The second radio we look inside is the JVC KT-SR1000. It's unique style sets it apart from the other Plug and Play Radios, but we'll see some very simular parts inside.

The JVC has two main internal components. The SIRIUS Tuner Module and the user interface panel. The user interface panel contains the LCD and buttons and give a nice user interface to the tuner module. The tuner module actually recieved and decodes the SIRIUS signal into music.

Click on Images to view a larger copy of the image


Just another JVC Radio


And the back of the radio, with the docking connector on the bottom.


When you crack open this radio, you will notice the user interface pannel connects to the tuner module via a bunch (11) wires. Also they have dumped the metal box tuner design that kenwood uses in the H2A for these units and placed the electronics for the tuner module on the same board as the power supply and driving circuit for the antenna.


Again a ribbon cable connects the circuit board to the LCD on the user interface pannel.


Once we remove the ribbon cable, we see the Atmel AVR Microcontroller (ATMEGA128). This microcontroller is actually used in both the user interface pannel and in the tuner it's self. So that makes 2 AVR Microcontrollers per PNP. And for those who don't know, Atmel was the first person to put flash memory in a Microcontroller (an 8951 to be exact)


And here is the front of the user interface panel. You can see the LCD at the top, the keypad layout and at the bottom in the metal box is the Infrared Reciever (IR) for the Remote control.


The tuner module still in the back part of the JVC Case.


The other side of the tuner module board. Most of what's on the bottom half of the board is the driving circuit for the antenna and the power supply. This is where alot of your power goes! At the top, you will notice a metal box, but don't be fooled, it's only about 1/8 to 1/4 of an inch think (more pictures below). This is the tuner module.


The other side of the tuner module board. You can see the Alegro (sp?) chip, one of three? for the SIRIUS chipset.


Another look


And one more close up.


I think it's funny, this board is dated Nov 2003, but look at the Mongo. They still used the old Mongo.


And a side shot of that tuner part of the tuner module board. you can see the Atmel AVR processor on the left hand side.


The cable connecting the two. If anyone happens to know where I can get these connectors (11 pins) I'd appriciate it!


And the cable again.
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Old 07-03-2004, 10:04 PM   #2
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Damn Jeremy! Nice Work!

Couple things:

-I believe the chip company is Agere(unless you are refering to another part when you mention alegro)

-That is the new Mongo, referenced by the star-eye. The old one look a tad more realistic and a hair more 3-D

-Do the radios still work?

-Did you look at the display at all on the frontside?
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Old 07-03-2004, 10:18 PM   #3
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Quote:
Originally Posted by BenDee
Damn Jeremy! Nice Work!
Thanks, I am going to add the PNP2 and Streamer soon.
Quote:
-I believe the chip company is Agere(unless you are refering to another part when you mention alegro)
Yep, that's it! Thanks.
Quote:
-That is the new Mongo, referenced by the star-eye. The old one look a tad more realistic and a hair more 3-D
It looks like the old one because he's not sitting all the way up like the new SIRIUS logo.
Quote:
-Do the radios still work?
Yes. I've only ever killed one radio in all my endevors.
Quote:
-Did you look at the display at all on the frontside?
Huh? I don't quite understand what your asking.
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Old 07-03-2004, 11:59 PM   #4
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Thanks Jeremy, very interesting indeed. I would be too nervous taking one apart like that, though I did open my Streamer one time because it had a bunch of dust between the plastic cover and the display. I took the screws out opened it up and blew the dust out with some canned air. Then immediately closed it back.
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Old 07-04-2004, 11:51 AM   #5
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hey, what does the inside of MY Unit look like???
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Old 07-04-2004, 01:36 PM   #6
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Quote:
Originally Posted by siriusradiofan
hey, what does the inside of MY Unit look like???
I don't know, send it to me and let's find out! If you are talking about the PNP2, I'll have pics in the next week.
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Old 07-04-2004, 04:32 PM   #7
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i dont know where you live, so i cant send it to ya
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Old 07-04-2004, 04:37 PM   #8
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Quote:
Originally Posted by fromplanetbob
I don't know, send it to me and let's find out!
If you do send it too him, it may be the second radio he breaks.
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Old 07-04-2004, 04:42 PM   #9
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Quote:
Originally Posted by RyanM
Quote:
Originally Posted by fromplanetbob
I don't know, send it to me and let's find out!
If you do send it too him, it may be the second radio he breaks.
thanks for the tip
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Old 07-04-2004, 04:43 PM   #10
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Quote:
Originally Posted by siriusradiofan
i dont know where you live, so i cant send it to ya
I'm kidding. I have 3 PNP2's (Waiting for the thrid to come in next week.) I will take one apart and photograph it next week sometime. I will do the streamer at the same time. I might also snap some pictures of the Kenwood H2A Revision 1 to show everyone the differences.
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Old 07-04-2004, 04:47 PM   #11
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Quote:
Originally Posted by fromplanetbob
Quote:
Originally Posted by siriusradiofan
i dont know where you live, so i cant send it to ya
I'm kidding. I have 3 PNP2's (Waiting for the thrid to come in next week.) I will take one apart and photograph it next week sometime. I will do the streamer at the same time. I might also snap some pictures of the Kenwood H2A Revision 1 to show everyone the differences.
do you get these for free or did you BUY EXTRA ONES just to rip them open to show people what they LOOK LIKE???
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Old 07-04-2004, 04:49 PM   #12
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Free? What's that?
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Old 07-04-2004, 04:51 PM   #13
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Quote:
Originally Posted by siriusradiofan
do you get these for free or did you BUY EXTRA ONES just to rip them open to show people what they LOOK LIKE???
Throught promos, open box specials and ebay I have purchased all my radios and never paid full retail price. I have one radio in the house, one in my car, one if the fiance's car. The JVC will most likely end up in my fiance's mom's car. I have two more radios slated to go to friends houses to update my ItsOnSIRIUS.com site (which allows for multiple radios to feed it information for redundancy.) And I might be getting a couple more H2A's from a friend at Best Buy Open box deals if he can get the manager to get me a good deal.

As for ripping them appart, well, i like to look inside and see how things work. I also have a bit of an ego and open these babys up with no real worries of breaking them. Others have asked me what's inside, so I thought I'd show everyone.
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Old 07-04-2004, 04:55 PM   #14
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dude, where do u live???? i want those SPECIAL DEALS, hook me up bro!!!
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Old 07-04-2004, 04:58 PM   #15
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Quote:
Originally Posted by siriusradiofan
dude, where do u live???? i want those SPECIAL DEALS, hook me up bro!!!
VA. And the special deals come and go VERY quickly. But look at the current F&F $50 radio promo going on right now. They are posted here when they are avaiable.
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